1// -*- C++ -*- 2//===--------------------------- sstream ----------------------------------===// 3// 4// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 5// See https://llvm.org/LICENSE.txt for license information. 6// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 7// 8//===----------------------------------------------------------------------===// 9 10#ifndef _LIBCPP_SSTREAM 11#define _LIBCPP_SSTREAM 12 13/* 14 sstream synopsis 15 16template <class charT, class traits = char_traits<charT>, class Allocator = allocator<charT> > 17class basic_stringbuf 18 : public basic_streambuf<charT, traits> 19{ 20public: 21 typedef charT char_type; 22 typedef traits traits_type; 23 typedef typename traits_type::int_type int_type; 24 typedef typename traits_type::pos_type pos_type; 25 typedef typename traits_type::off_type off_type; 26 typedef Allocator allocator_type; 27 28 // 27.8.1.1 [stringbuf.cons], constructors: 29 explicit basic_stringbuf(ios_base::openmode which = ios_base::in | ios_base::out); // before C++20 30 basic_stringbuf() : basic_stringbuf(ios_base::in | ios_base::out) {} // C++20 31 explicit basic_stringbuf(ios_base::openmode which); // C++20 32 explicit basic_stringbuf(const basic_string<char_type, traits_type, allocator_type>& str, 33 ios_base::openmode which = ios_base::in | ios_base::out); 34 basic_stringbuf(basic_stringbuf&& rhs); 35 36 // 27.8.1.2 Assign and swap: 37 basic_stringbuf& operator=(basic_stringbuf&& rhs); 38 void swap(basic_stringbuf& rhs); 39 40 // 27.8.1.3 Get and set: 41 basic_string<char_type, traits_type, allocator_type> str() const; 42 void str(const basic_string<char_type, traits_type, allocator_type>& s); 43 44protected: 45 // 27.8.1.4 Overridden virtual functions: 46 virtual int_type underflow(); 47 virtual int_type pbackfail(int_type c = traits_type::eof()); 48 virtual int_type overflow (int_type c = traits_type::eof()); 49 virtual basic_streambuf<char_type, traits_type>* setbuf(char_type*, streamsize); 50 virtual pos_type seekoff(off_type off, ios_base::seekdir way, 51 ios_base::openmode which = ios_base::in | ios_base::out); 52 virtual pos_type seekpos(pos_type sp, 53 ios_base::openmode which = ios_base::in | ios_base::out); 54}; 55 56template <class charT, class traits, class Allocator> 57 void swap(basic_stringbuf<charT, traits, Allocator>& x, 58 basic_stringbuf<charT, traits, Allocator>& y); 59 60typedef basic_stringbuf<char> stringbuf; 61typedef basic_stringbuf<wchar_t> wstringbuf; 62 63template <class charT, class traits = char_traits<charT>, class Allocator = allocator<charT> > 64class basic_istringstream 65 : public basic_istream<charT, traits> 66{ 67public: 68 typedef charT char_type; 69 typedef traits traits_type; 70 typedef typename traits_type::int_type int_type; 71 typedef typename traits_type::pos_type pos_type; 72 typedef typename traits_type::off_type off_type; 73 typedef Allocator allocator_type; 74 75 // 27.8.2.1 Constructors: 76 explicit basic_istringstream(ios_base::openmode which = ios_base::in); // before C++20 77 basic_istringstream() : basic_istringstream(ios_base::in) {} // C++20 78 explicit basic_istringstream(ios_base::openmode which); // C++20 79 80 explicit basic_istringstream(const basic_string<char_type, traits_type,allocator_type>& str, 81 ios_base::openmode which = ios_base::in); 82 basic_istringstream(basic_istringstream&& rhs); 83 84 // 27.8.2.2 Assign and swap: 85 basic_istringstream& operator=(basic_istringstream&& rhs); 86 void swap(basic_istringstream& rhs); 87 88 // 27.8.2.3 Members: 89 basic_stringbuf<char_type, traits_type, allocator_type>* rdbuf() const; 90 basic_string<char_type, traits_type, allocator_type> str() const; 91 void str(const basic_string<char_type, traits_type, allocator_type>& s); 92}; 93 94template <class charT, class traits, class Allocator> 95 void swap(basic_istringstream<charT, traits, Allocator>& x, 96 basic_istringstream<charT, traits, Allocator>& y); 97 98typedef basic_istringstream<char> istringstream; 99typedef basic_istringstream<wchar_t> wistringstream; 100 101template <class charT, class traits = char_traits<charT>, class Allocator = allocator<charT> > 102class basic_ostringstream 103 : public basic_ostream<charT, traits> 104{ 105public: 106 // types: 107 typedef charT char_type; 108 typedef traits traits_type; 109 typedef typename traits_type::int_type int_type; 110 typedef typename traits_type::pos_type pos_type; 111 typedef typename traits_type::off_type off_type; 112 typedef Allocator allocator_type; 113 114 // 27.8.3.1 Constructors/destructor: 115 explicit basic_ostringstream(ios_base::openmode which = ios_base::out); // before C++20 116 basic_ostringstream() : basic_ostringstream(ios_base::out) {} // C++20 117 explicit basic_ostringstream(ios_base::openmode which); // C++20 118 119 explicit basic_ostringstream(const basic_string<char_type, traits_type, allocator_type>& str, 120 ios_base::openmode which = ios_base::out); 121 basic_ostringstream(basic_ostringstream&& rhs); 122 123 // 27.8.3.2 Assign/swap: 124 basic_ostringstream& operator=(basic_ostringstream&& rhs); 125 void swap(basic_ostringstream& rhs); 126 127 // 27.8.3.3 Members: 128 basic_stringbuf<char_type, traits_type, allocator_type>* rdbuf() const; 129 basic_string<char_type, traits_type, allocator_type> str() const; 130 void str(const basic_string<char_type, traits_type, allocator_type>& s); 131}; 132 133template <class charT, class traits, class Allocator> 134 void swap(basic_ostringstream<charT, traits, Allocator>& x, 135 basic_ostringstream<charT, traits, Allocator>& y); 136 137typedef basic_ostringstream<char> ostringstream; 138typedef basic_ostringstream<wchar_t> wostringstream; 139 140template <class charT, class traits = char_traits<charT>, class Allocator = allocator<charT> > 141class basic_stringstream 142 : public basic_iostream<charT, traits> 143{ 144public: 145 // types: 146 typedef charT char_type; 147 typedef traits traits_type; 148 typedef typename traits_type::int_type int_type; 149 typedef typename traits_type::pos_type pos_type; 150 typedef typename traits_type::off_type off_type; 151 typedef Allocator allocator_type; 152 153 // constructors/destructor 154 explicit basic_stringstream(ios_base::openmode which = ios_base::out | ios_base::in); // before C++20 155 basic_stringstream() : basic_stringstream(ios_base::out | ios_base::in) {} // C++20 156 explicit basic_stringstream(ios_base::openmode which); // C++20 157 158 explicit basic_stringstream(const basic_string<char_type, traits_type, allocator_type>& str, 159 ios_base::openmode which = ios_base::out|ios_base::in); 160 basic_stringstream(basic_stringstream&& rhs); 161 162 // 27.8.5.1 Assign/swap: 163 basic_stringstream& operator=(basic_stringstream&& rhs); 164 void swap(basic_stringstream& rhs); 165 166 // Members: 167 basic_stringbuf<char_type, traits_type, allocator_type>* rdbuf() const; 168 basic_string<char_type, traits_type, allocator_type> str() const; 169 void str(const basic_string<char_type, traits_type, allocator_type>& str); 170}; 171 172template <class charT, class traits, class Allocator> 173 void swap(basic_stringstream<charT, traits, Allocator>& x, 174 basic_stringstream<charT, traits, Allocator>& y); 175 176typedef basic_stringstream<char> stringstream; 177typedef basic_stringstream<wchar_t> wstringstream; 178 179} // std 180 181*/ 182 183#include <__config> 184#include <istream> 185#include <ostream> 186#include <string> 187 188#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 189#pragma GCC system_header 190#endif 191 192_LIBCPP_PUSH_MACROS 193#include <__undef_macros> 194 195 196_LIBCPP_BEGIN_NAMESPACE_STD 197 198// basic_stringbuf 199 200template <class _CharT, class _Traits, class _Allocator> 201class _LIBCPP_TEMPLATE_VIS basic_stringbuf 202 : public basic_streambuf<_CharT, _Traits> 203{ 204public: 205 typedef _CharT char_type; 206 typedef _Traits traits_type; 207 typedef typename traits_type::int_type int_type; 208 typedef typename traits_type::pos_type pos_type; 209 typedef typename traits_type::off_type off_type; 210 typedef _Allocator allocator_type; 211 212 typedef basic_string<char_type, traits_type, allocator_type> string_type; 213 214private: 215 216 string_type __str_; 217 mutable char_type* __hm_; 218 ios_base::openmode __mode_; 219 220public: 221 // 30.8.2.1 [stringbuf.cons], constructors 222 _LIBCPP_INLINE_VISIBILITY 223 basic_stringbuf() 224 : __hm_(nullptr), __mode_(ios_base::in | ios_base::out) {} 225 226 _LIBCPP_INLINE_VISIBILITY 227 explicit basic_stringbuf(ios_base::openmode __wch) 228 : __hm_(nullptr), __mode_(__wch) {} 229 230 _LIBCPP_INLINE_VISIBILITY 231 explicit basic_stringbuf(const string_type& __s, 232 ios_base::openmode __wch = ios_base::in | ios_base::out) 233 : __str_(__s.get_allocator()), __hm_(nullptr), __mode_(__wch) 234 { 235 str(__s); 236 } 237 238 basic_stringbuf(basic_stringbuf&& __rhs); 239 240 // 27.8.1.2 Assign and swap: 241 basic_stringbuf& operator=(basic_stringbuf&& __rhs); 242 void swap(basic_stringbuf& __rhs); 243 244 // 27.8.1.3 Get and set: 245 string_type str() const; 246 void str(const string_type& __s); 247 248protected: 249 // 27.8.1.4 Overridden virtual functions: 250 virtual int_type underflow(); 251 virtual int_type pbackfail(int_type __c = traits_type::eof()); 252 virtual int_type overflow (int_type __c = traits_type::eof()); 253 virtual pos_type seekoff(off_type __off, ios_base::seekdir __way, 254 ios_base::openmode __wch = ios_base::in | ios_base::out); 255 _LIBCPP_INLINE_VISIBILITY 256 virtual pos_type seekpos(pos_type __sp, 257 ios_base::openmode __wch = ios_base::in | ios_base::out) { 258 return seekoff(__sp, ios_base::beg, __wch); 259 } 260}; 261 262template <class _CharT, class _Traits, class _Allocator> 263basic_stringbuf<_CharT, _Traits, _Allocator>::basic_stringbuf(basic_stringbuf&& __rhs) 264 : __mode_(__rhs.__mode_) 265{ 266 char_type* __p = const_cast<char_type*>(__rhs.__str_.data()); 267 ptrdiff_t __binp = -1; 268 ptrdiff_t __ninp = -1; 269 ptrdiff_t __einp = -1; 270 if (__rhs.eback() != nullptr) 271 { 272 __binp = __rhs.eback() - __p; 273 __ninp = __rhs.gptr() - __p; 274 __einp = __rhs.egptr() - __p; 275 } 276 ptrdiff_t __bout = -1; 277 ptrdiff_t __nout = -1; 278 ptrdiff_t __eout = -1; 279 if (__rhs.pbase() != nullptr) 280 { 281 __bout = __rhs.pbase() - __p; 282 __nout = __rhs.pptr() - __p; 283 __eout = __rhs.epptr() - __p; 284 } 285 ptrdiff_t __hm = __rhs.__hm_ == nullptr ? -1 : __rhs.__hm_ - __p; 286 __str_ = _VSTD::move(__rhs.__str_); 287 __p = const_cast<char_type*>(__str_.data()); 288 if (__binp != -1) 289 this->setg(__p + __binp, __p + __ninp, __p + __einp); 290 if (__bout != -1) 291 { 292 this->setp(__p + __bout, __p + __eout); 293 this->__pbump(__nout); 294 } 295 __hm_ = __hm == -1 ? nullptr : __p + __hm; 296 __p = const_cast<char_type*>(__rhs.__str_.data()); 297 __rhs.setg(__p, __p, __p); 298 __rhs.setp(__p, __p); 299 __rhs.__hm_ = __p; 300 this->pubimbue(__rhs.getloc()); 301} 302 303template <class _CharT, class _Traits, class _Allocator> 304basic_stringbuf<_CharT, _Traits, _Allocator>& 305basic_stringbuf<_CharT, _Traits, _Allocator>::operator=(basic_stringbuf&& __rhs) 306{ 307 char_type* __p = const_cast<char_type*>(__rhs.__str_.data()); 308 ptrdiff_t __binp = -1; 309 ptrdiff_t __ninp = -1; 310 ptrdiff_t __einp = -1; 311 if (__rhs.eback() != nullptr) 312 { 313 __binp = __rhs.eback() - __p; 314 __ninp = __rhs.gptr() - __p; 315 __einp = __rhs.egptr() - __p; 316 } 317 ptrdiff_t __bout = -1; 318 ptrdiff_t __nout = -1; 319 ptrdiff_t __eout = -1; 320 if (__rhs.pbase() != nullptr) 321 { 322 __bout = __rhs.pbase() - __p; 323 __nout = __rhs.pptr() - __p; 324 __eout = __rhs.epptr() - __p; 325 } 326 ptrdiff_t __hm = __rhs.__hm_ == nullptr ? -1 : __rhs.__hm_ - __p; 327 __str_ = _VSTD::move(__rhs.__str_); 328 __p = const_cast<char_type*>(__str_.data()); 329 if (__binp != -1) 330 this->setg(__p + __binp, __p + __ninp, __p + __einp); 331 else 332 this->setg(nullptr, nullptr, nullptr); 333 if (__bout != -1) 334 { 335 this->setp(__p + __bout, __p + __eout); 336 this->__pbump(__nout); 337 } 338 else 339 this->setp(nullptr, nullptr); 340 341 __hm_ = __hm == -1 ? nullptr : __p + __hm; 342 __mode_ = __rhs.__mode_; 343 __p = const_cast<char_type*>(__rhs.__str_.data()); 344 __rhs.setg(__p, __p, __p); 345 __rhs.setp(__p, __p); 346 __rhs.__hm_ = __p; 347 this->pubimbue(__rhs.getloc()); 348 return *this; 349} 350 351template <class _CharT, class _Traits, class _Allocator> 352void 353basic_stringbuf<_CharT, _Traits, _Allocator>::swap(basic_stringbuf& __rhs) 354{ 355 char_type* __p = const_cast<char_type*>(__rhs.__str_.data()); 356 ptrdiff_t __rbinp = -1; 357 ptrdiff_t __rninp = -1; 358 ptrdiff_t __reinp = -1; 359 if (__rhs.eback() != nullptr) 360 { 361 __rbinp = __rhs.eback() - __p; 362 __rninp = __rhs.gptr() - __p; 363 __reinp = __rhs.egptr() - __p; 364 } 365 ptrdiff_t __rbout = -1; 366 ptrdiff_t __rnout = -1; 367 ptrdiff_t __reout = -1; 368 if (__rhs.pbase() != nullptr) 369 { 370 __rbout = __rhs.pbase() - __p; 371 __rnout = __rhs.pptr() - __p; 372 __reout = __rhs.epptr() - __p; 373 } 374 ptrdiff_t __rhm = __rhs.__hm_ == nullptr ? -1 : __rhs.__hm_ - __p; 375 __p = const_cast<char_type*>(__str_.data()); 376 ptrdiff_t __lbinp = -1; 377 ptrdiff_t __lninp = -1; 378 ptrdiff_t __leinp = -1; 379 if (this->eback() != nullptr) 380 { 381 __lbinp = this->eback() - __p; 382 __lninp = this->gptr() - __p; 383 __leinp = this->egptr() - __p; 384 } 385 ptrdiff_t __lbout = -1; 386 ptrdiff_t __lnout = -1; 387 ptrdiff_t __leout = -1; 388 if (this->pbase() != nullptr) 389 { 390 __lbout = this->pbase() - __p; 391 __lnout = this->pptr() - __p; 392 __leout = this->epptr() - __p; 393 } 394 ptrdiff_t __lhm = __hm_ == nullptr ? -1 : __hm_ - __p; 395 _VSTD::swap(__mode_, __rhs.__mode_); 396 __str_.swap(__rhs.__str_); 397 __p = const_cast<char_type*>(__str_.data()); 398 if (__rbinp != -1) 399 this->setg(__p + __rbinp, __p + __rninp, __p + __reinp); 400 else 401 this->setg(nullptr, nullptr, nullptr); 402 if (__rbout != -1) 403 { 404 this->setp(__p + __rbout, __p + __reout); 405 this->__pbump(__rnout); 406 } 407 else 408 this->setp(nullptr, nullptr); 409 __hm_ = __rhm == -1 ? nullptr : __p + __rhm; 410 __p = const_cast<char_type*>(__rhs.__str_.data()); 411 if (__lbinp != -1) 412 __rhs.setg(__p + __lbinp, __p + __lninp, __p + __leinp); 413 else 414 __rhs.setg(nullptr, nullptr, nullptr); 415 if (__lbout != -1) 416 { 417 __rhs.setp(__p + __lbout, __p + __leout); 418 __rhs.__pbump(__lnout); 419 } 420 else 421 __rhs.setp(nullptr, nullptr); 422 __rhs.__hm_ = __lhm == -1 ? nullptr : __p + __lhm; 423 locale __tl = __rhs.getloc(); 424 __rhs.pubimbue(this->getloc()); 425 this->pubimbue(__tl); 426} 427 428template <class _CharT, class _Traits, class _Allocator> 429inline _LIBCPP_INLINE_VISIBILITY 430void 431swap(basic_stringbuf<_CharT, _Traits, _Allocator>& __x, 432 basic_stringbuf<_CharT, _Traits, _Allocator>& __y) 433{ 434 __x.swap(__y); 435} 436 437template <class _CharT, class _Traits, class _Allocator> 438basic_string<_CharT, _Traits, _Allocator> 439basic_stringbuf<_CharT, _Traits, _Allocator>::str() const 440{ 441 if (__mode_ & ios_base::out) 442 { 443 if (__hm_ < this->pptr()) 444 __hm_ = this->pptr(); 445 return string_type(this->pbase(), __hm_, __str_.get_allocator()); 446 } 447 else if (__mode_ & ios_base::in) 448 return string_type(this->eback(), this->egptr(), __str_.get_allocator()); 449 return string_type(__str_.get_allocator()); 450} 451 452template <class _CharT, class _Traits, class _Allocator> 453void 454basic_stringbuf<_CharT, _Traits, _Allocator>::str(const string_type& __s) 455{ 456 __str_ = __s; 457 __hm_ = nullptr; 458 if (__mode_ & ios_base::in) 459 { 460 __hm_ = const_cast<char_type*>(__str_.data()) + __str_.size(); 461 this->setg(const_cast<char_type*>(__str_.data()), 462 const_cast<char_type*>(__str_.data()), 463 __hm_); 464 } 465 if (__mode_ & ios_base::out) 466 { 467 typename string_type::size_type __sz = __str_.size(); 468 __hm_ = const_cast<char_type*>(__str_.data()) + __sz; 469 __str_.resize(__str_.capacity()); 470 this->setp(const_cast<char_type*>(__str_.data()), 471 const_cast<char_type*>(__str_.data()) + __str_.size()); 472 if (__mode_ & (ios_base::app | ios_base::ate)) 473 { 474 while (__sz > INT_MAX) 475 { 476 this->pbump(INT_MAX); 477 __sz -= INT_MAX; 478 } 479 if (__sz > 0) 480 this->pbump(__sz); 481 } 482 } 483} 484 485template <class _CharT, class _Traits, class _Allocator> 486typename basic_stringbuf<_CharT, _Traits, _Allocator>::int_type 487basic_stringbuf<_CharT, _Traits, _Allocator>::underflow() 488{ 489 if (__hm_ < this->pptr()) 490 __hm_ = this->pptr(); 491 if (__mode_ & ios_base::in) 492 { 493 if (this->egptr() < __hm_) 494 this->setg(this->eback(), this->gptr(), __hm_); 495 if (this->gptr() < this->egptr()) 496 return traits_type::to_int_type(*this->gptr()); 497 } 498 return traits_type::eof(); 499} 500 501template <class _CharT, class _Traits, class _Allocator> 502typename basic_stringbuf<_CharT, _Traits, _Allocator>::int_type 503basic_stringbuf<_CharT, _Traits, _Allocator>::pbackfail(int_type __c) 504{ 505 if (__hm_ < this->pptr()) 506 __hm_ = this->pptr(); 507 if (this->eback() < this->gptr()) 508 { 509 if (traits_type::eq_int_type(__c, traits_type::eof())) 510 { 511 this->setg(this->eback(), this->gptr()-1, __hm_); 512 return traits_type::not_eof(__c); 513 } 514 if ((__mode_ & ios_base::out) || 515 traits_type::eq(traits_type::to_char_type(__c), this->gptr()[-1])) 516 { 517 this->setg(this->eback(), this->gptr()-1, __hm_); 518 *this->gptr() = traits_type::to_char_type(__c); 519 return __c; 520 } 521 } 522 return traits_type::eof(); 523} 524 525template <class _CharT, class _Traits, class _Allocator> 526typename basic_stringbuf<_CharT, _Traits, _Allocator>::int_type 527basic_stringbuf<_CharT, _Traits, _Allocator>::overflow(int_type __c) 528{ 529 if (!traits_type::eq_int_type(__c, traits_type::eof())) 530 { 531 ptrdiff_t __ninp = this->gptr() - this->eback(); 532 if (this->pptr() == this->epptr()) 533 { 534 if (!(__mode_ & ios_base::out)) 535 return traits_type::eof(); 536#ifndef _LIBCPP_NO_EXCEPTIONS 537 try 538 { 539#endif // _LIBCPP_NO_EXCEPTIONS 540 ptrdiff_t __nout = this->pptr() - this->pbase(); 541 ptrdiff_t __hm = __hm_ - this->pbase(); 542 __str_.push_back(char_type()); 543 __str_.resize(__str_.capacity()); 544 char_type* __p = const_cast<char_type*>(__str_.data()); 545 this->setp(__p, __p + __str_.size()); 546 this->__pbump(__nout); 547 __hm_ = this->pbase() + __hm; 548#ifndef _LIBCPP_NO_EXCEPTIONS 549 } 550 catch (...) 551 { 552 return traits_type::eof(); 553 } 554#endif // _LIBCPP_NO_EXCEPTIONS 555 } 556 __hm_ = _VSTD::max(this->pptr() + 1, __hm_); 557 if (__mode_ & ios_base::in) 558 { 559 char_type* __p = const_cast<char_type*>(__str_.data()); 560 this->setg(__p, __p + __ninp, __hm_); 561 } 562 return this->sputc(traits_type::to_char_type(__c)); 563 } 564 return traits_type::not_eof(__c); 565} 566 567template <class _CharT, class _Traits, class _Allocator> 568typename basic_stringbuf<_CharT, _Traits, _Allocator>::pos_type 569basic_stringbuf<_CharT, _Traits, _Allocator>::seekoff(off_type __off, 570 ios_base::seekdir __way, 571 ios_base::openmode __wch) 572{ 573 if (__hm_ < this->pptr()) 574 __hm_ = this->pptr(); 575 if ((__wch & (ios_base::in | ios_base::out)) == 0) 576 return pos_type(-1); 577 if ((__wch & (ios_base::in | ios_base::out)) == (ios_base::in | ios_base::out) 578 && __way == ios_base::cur) 579 return pos_type(-1); 580 const ptrdiff_t __hm = __hm_ == nullptr ? 0 : __hm_ - __str_.data(); 581 off_type __noff; 582 switch (__way) 583 { 584 case ios_base::beg: 585 __noff = 0; 586 break; 587 case ios_base::cur: 588 if (__wch & ios_base::in) 589 __noff = this->gptr() - this->eback(); 590 else 591 __noff = this->pptr() - this->pbase(); 592 break; 593 case ios_base::end: 594 __noff = __hm; 595 break; 596 default: 597 return pos_type(-1); 598 } 599 __noff += __off; 600 if (__noff < 0 || __hm < __noff) 601 return pos_type(-1); 602 if (__noff != 0) 603 { 604 if ((__wch & ios_base::in) && this->gptr() == nullptr) 605 return pos_type(-1); 606 if ((__wch & ios_base::out) && this->pptr() == nullptr) 607 return pos_type(-1); 608 } 609 if (__wch & ios_base::in) 610 this->setg(this->eback(), this->eback() + __noff, __hm_); 611 if (__wch & ios_base::out) 612 { 613 this->setp(this->pbase(), this->epptr()); 614 this->pbump(__noff); 615 } 616 return pos_type(__noff); 617} 618 619// basic_istringstream 620 621template <class _CharT, class _Traits, class _Allocator> 622class _LIBCPP_TEMPLATE_VIS basic_istringstream 623 : public basic_istream<_CharT, _Traits> 624{ 625public: 626 typedef _CharT char_type; 627 typedef _Traits traits_type; 628 typedef typename traits_type::int_type int_type; 629 typedef typename traits_type::pos_type pos_type; 630 typedef typename traits_type::off_type off_type; 631 typedef _Allocator allocator_type; 632 633 typedef basic_string<char_type, traits_type, allocator_type> string_type; 634 635private: 636 basic_stringbuf<char_type, traits_type, allocator_type> __sb_; 637 638public: 639 // 30.8.3.1 [istringstream.cons], constructors 640 _LIBCPP_INLINE_VISIBILITY 641 basic_istringstream() 642 : basic_istream<_CharT, _Traits>(&__sb_), __sb_(ios_base::in) {} 643 644 _LIBCPP_INLINE_VISIBILITY 645 explicit basic_istringstream(ios_base::openmode __wch) 646 : basic_istream<_CharT, _Traits>(&__sb_), __sb_(__wch | ios_base::in) {} 647 648 _LIBCPP_INLINE_VISIBILITY 649 explicit basic_istringstream(const string_type& __s, 650 ios_base::openmode __wch = ios_base::in) 651 : basic_istream<_CharT, _Traits>(&__sb_) 652 , __sb_(__s, __wch | ios_base::in) 653 { } 654 655 _LIBCPP_INLINE_VISIBILITY 656 basic_istringstream(basic_istringstream&& __rhs) 657 : basic_istream<_CharT, _Traits>(_VSTD::move(__rhs)) 658 , __sb_(_VSTD::move(__rhs.__sb_)) 659 { 660 basic_istream<_CharT, _Traits>::set_rdbuf(&__sb_); 661 } 662 663 // 27.8.2.2 Assign and swap: 664 basic_istringstream& operator=(basic_istringstream&& __rhs) { 665 basic_istream<char_type, traits_type>::operator=(_VSTD::move(__rhs)); 666 __sb_ = _VSTD::move(__rhs.__sb_); 667 return *this; 668 } 669 _LIBCPP_INLINE_VISIBILITY 670 void swap(basic_istringstream& __rhs) { 671 basic_istream<char_type, traits_type>::swap(__rhs); 672 __sb_.swap(__rhs.__sb_); 673 } 674 675 // 27.8.2.3 Members: 676 _LIBCPP_INLINE_VISIBILITY 677 basic_stringbuf<char_type, traits_type, allocator_type>* rdbuf() const { 678 return const_cast<basic_stringbuf<char_type, traits_type, allocator_type>*>(&__sb_); 679 } 680 _LIBCPP_INLINE_VISIBILITY 681 string_type str() const { 682 return __sb_.str(); 683 } 684 _LIBCPP_INLINE_VISIBILITY 685 void str(const string_type& __s) { 686 __sb_.str(__s); 687 } 688}; 689 690template <class _CharT, class _Traits, class _Allocator> 691inline _LIBCPP_INLINE_VISIBILITY 692void 693swap(basic_istringstream<_CharT, _Traits, _Allocator>& __x, 694 basic_istringstream<_CharT, _Traits, _Allocator>& __y) 695{ 696 __x.swap(__y); 697} 698 699// basic_ostringstream 700 701template <class _CharT, class _Traits, class _Allocator> 702class _LIBCPP_TEMPLATE_VIS basic_ostringstream 703 : public basic_ostream<_CharT, _Traits> 704{ 705public: 706 typedef _CharT char_type; 707 typedef _Traits traits_type; 708 typedef typename traits_type::int_type int_type; 709 typedef typename traits_type::pos_type pos_type; 710 typedef typename traits_type::off_type off_type; 711 typedef _Allocator allocator_type; 712 713 typedef basic_string<char_type, traits_type, allocator_type> string_type; 714 715private: 716 basic_stringbuf<char_type, traits_type, allocator_type> __sb_; 717 718public: 719 // 30.8.4.1 [ostringstream.cons], constructors 720 _LIBCPP_INLINE_VISIBILITY 721 basic_ostringstream() 722 : basic_ostream<_CharT, _Traits>(&__sb_), __sb_(ios_base::out) {} 723 724 _LIBCPP_INLINE_VISIBILITY 725 explicit basic_ostringstream(ios_base::openmode __wch) 726 : basic_ostream<_CharT, _Traits>(&__sb_), __sb_(__wch | ios_base::out) {} 727 728 _LIBCPP_INLINE_VISIBILITY 729 explicit basic_ostringstream(const string_type& __s, 730 ios_base::openmode __wch = ios_base::out) 731 : basic_ostream<_CharT, _Traits>(&__sb_) 732 , __sb_(__s, __wch | ios_base::out) 733 { } 734 735 _LIBCPP_INLINE_VISIBILITY 736 basic_ostringstream(basic_ostringstream&& __rhs) 737 : basic_ostream<_CharT, _Traits>(_VSTD::move(__rhs)) 738 , __sb_(_VSTD::move(__rhs.__sb_)) 739 { 740 basic_ostream<_CharT, _Traits>::set_rdbuf(&__sb_); 741 } 742 743 // 27.8.2.2 Assign and swap: 744 basic_ostringstream& operator=(basic_ostringstream&& __rhs) { 745 basic_ostream<char_type, traits_type>::operator=(_VSTD::move(__rhs)); 746 __sb_ = _VSTD::move(__rhs.__sb_); 747 return *this; 748 } 749 750 _LIBCPP_INLINE_VISIBILITY 751 void swap(basic_ostringstream& __rhs) { 752 basic_ostream<char_type, traits_type>::swap(__rhs); 753 __sb_.swap(__rhs.__sb_); 754 } 755 756 // 27.8.2.3 Members: 757 _LIBCPP_INLINE_VISIBILITY 758 basic_stringbuf<char_type, traits_type, allocator_type>* rdbuf() const { 759 return const_cast<basic_stringbuf<char_type, traits_type, allocator_type>*>(&__sb_); 760 } 761 _LIBCPP_INLINE_VISIBILITY 762 string_type str() const { 763 return __sb_.str(); 764 } 765 _LIBCPP_INLINE_VISIBILITY 766 void str(const string_type& __s) { 767 __sb_.str(__s); 768 } 769}; 770 771template <class _CharT, class _Traits, class _Allocator> 772inline _LIBCPP_INLINE_VISIBILITY 773void 774swap(basic_ostringstream<_CharT, _Traits, _Allocator>& __x, 775 basic_ostringstream<_CharT, _Traits, _Allocator>& __y) 776{ 777 __x.swap(__y); 778} 779 780// basic_stringstream 781 782template <class _CharT, class _Traits, class _Allocator> 783class _LIBCPP_TEMPLATE_VIS basic_stringstream 784 : public basic_iostream<_CharT, _Traits> 785{ 786public: 787 typedef _CharT char_type; 788 typedef _Traits traits_type; 789 typedef typename traits_type::int_type int_type; 790 typedef typename traits_type::pos_type pos_type; 791 typedef typename traits_type::off_type off_type; 792 typedef _Allocator allocator_type; 793 794 typedef basic_string<char_type, traits_type, allocator_type> string_type; 795 796private: 797 basic_stringbuf<char_type, traits_type, allocator_type> __sb_; 798 799public: 800 // 30.8.5.1 [stringstream.cons], constructors 801 _LIBCPP_INLINE_VISIBILITY 802 basic_stringstream() 803 : basic_iostream<_CharT, _Traits>(&__sb_), __sb_(ios_base::in | ios_base::out) {} 804 805 _LIBCPP_INLINE_VISIBILITY 806 explicit basic_stringstream(ios_base::openmode __wch) 807 : basic_iostream<_CharT, _Traits>(&__sb_), __sb_(__wch) {} 808 809 _LIBCPP_INLINE_VISIBILITY 810 explicit basic_stringstream(const string_type& __s, 811 ios_base::openmode __wch = ios_base::in | ios_base::out) 812 : basic_iostream<_CharT, _Traits>(&__sb_) 813 , __sb_(__s, __wch) 814 { } 815 816 _LIBCPP_INLINE_VISIBILITY 817 basic_stringstream(basic_stringstream&& __rhs) 818 : basic_iostream<_CharT, _Traits>(_VSTD::move(__rhs)) 819 , __sb_(_VSTD::move(__rhs.__sb_)) 820 { 821 basic_istream<_CharT, _Traits>::set_rdbuf(&__sb_); 822 } 823 824 // 27.8.2.2 Assign and swap: 825 basic_stringstream& operator=(basic_stringstream&& __rhs) { 826 basic_iostream<char_type, traits_type>::operator=(_VSTD::move(__rhs)); 827 __sb_ = _VSTD::move(__rhs.__sb_); 828 return *this; 829 } 830 _LIBCPP_INLINE_VISIBILITY 831 void swap(basic_stringstream& __rhs) { 832 basic_iostream<char_type, traits_type>::swap(__rhs); 833 __sb_.swap(__rhs.__sb_); 834 } 835 836 // 27.8.2.3 Members: 837 _LIBCPP_INLINE_VISIBILITY 838 basic_stringbuf<char_type, traits_type, allocator_type>* rdbuf() const { 839 return const_cast<basic_stringbuf<char_type, traits_type, allocator_type>*>(&__sb_); 840 } 841 _LIBCPP_INLINE_VISIBILITY 842 string_type str() const { 843 return __sb_.str(); 844 } 845 _LIBCPP_INLINE_VISIBILITY 846 void str(const string_type& __s) { 847 __sb_.str(__s); 848 } 849}; 850 851template <class _CharT, class _Traits, class _Allocator> 852inline _LIBCPP_INLINE_VISIBILITY 853void 854swap(basic_stringstream<_CharT, _Traits, _Allocator>& __x, 855 basic_stringstream<_CharT, _Traits, _Allocator>& __y) 856{ 857 __x.swap(__y); 858} 859 860#if defined(_LIBCPP_ABI_ENABLE_ADDITIONAL_IOSTREAM_EXPLICIT_INSTANTIATIONS_1) 861_LIBCPP_EXTERN_TEMPLATE(class _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS basic_stringbuf<char>) 862_LIBCPP_EXTERN_TEMPLATE(class _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS basic_stringstream<char>) 863_LIBCPP_EXTERN_TEMPLATE(class _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS basic_ostringstream<char>) 864_LIBCPP_EXTERN_TEMPLATE(class _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS basic_istringstream<char>) 865#endif 866 867_LIBCPP_END_NAMESPACE_STD 868 869_LIBCPP_POP_MACROS 870 871#endif // _LIBCPP_SSTREAM 872